| 摘要 |
PROBLEM TO BE SOLVED: To prevent leaving of a paper sheet on an output tray that occurs when a user forgets to take out the printed paper sheet in an environment that unnamed multiple users share a printer through a network. SOLUTION: A plurality of output trays are provided as output targets of paper sheets and the output target is switched at a predetermined interval. A paper conveying function for conveying the paper sheet outputted to the output tray to a paper destruction outlet is provided to a rear operating device. Before switching the output target, the paper sheet on the output tray is destructed by using the paper conveying function.
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